Dickeson--Use the Right Efficiency Formula

In a word: No.

When economists say productivity is up, they mean that the value of the gross national product, factored by the resources applied, has risen. Nobody mentions "chargeability."

So if Herrott didn't mean the same thing that national economists mean, what did he mean? Has Herrott taken a page from Lewis Carroll's Alice in Wonderland, where one character likes to say, "It means what I say it means when I say it"?